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Cool pictures I recognize the Iskra and Piher to the right and the carbon comp to the extreme left but does anyone know the origin/manufacturer of the two remaining carbon film resistors (skinny guy in the middle and to the left with rounded ends) ?

might look at/for Beyschlag if anyone is looking for red carbon films that look about right (net searching, ebay, etc.). Also, I've seen Japanese carbon film having the red(or -ish) base color but haven't found any in the Marshall-correct values.

(not that I'm an expert, but) my understanding of the "Hy-Stab" term (trademark??) is (was) a generic term for (then) new carbon film Rs (more stable then CComp--paint helps keep out moisture?). Someone older who has worked w/electronics in UK for a long time probably knows. Another possibility is an older version (bit diff. package) from some brand (the newer versions should generally be smaller I'd think). Wonder if somewhere out there there possibly exists a list of UK component makers (I've seen something like that for Japanese parts makers in a Japanese tech. mag.).